Article
Chemistry, Inorganic & Nuclear
Xiaomeng Yin, Hui Lin, Dawei Zhang, Ruijin Hong, Chunxian Tao, Zhaoxia Han, Shengming Zhou, Zhi-Jun Zhang, Guanhaoije Zheng
Summary: In this paper, BaAl2O4:Eu2+-Al2O3 ceramics were successfully prepared using spark plasma sintering, and their optical properties as well as temperature sensing capabilities were studied. The results show that the ceramic material has promising potential for non-contact temperature sensing applications, with absolute sensitivity exceeding 0.005 K-1 at certain temperature ranges.
DALTON TRANSACTIONS
(2022)
Article
Materials Science, Multidisciplinary
Erkul Karacaoglu, Mesut Uyaner, Ali Kemal Okyay, Mark D. Losego
Summary: This paper presents the mechanisms of aqueous degradation of BaAl2O4:Eu2+, Dy3+ phosphors and proposes a method to prevent degradation by nano encapsulation with Al2O3 through atomic layer deposition (ALD) technique. The degradation behavior of the phosphor in water is systematically studied, revealing hydrolysis and structural decomposition. A protective nanocoating using 10 nm Al2O3 is found to effectively prevent degradation for at least 7 days of water exposure. Successful encapsulation enables the potential use of the phosphor in aqueous applications or long-term humid environments.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Review
Engineering, Chemical
Yaqi Yao, Jinming Xu, Yanqiang Huang, Tao Zhang
Summary: This review summarizes the synthesis methods and applications of carbon nanospheres (CNS) in various fields. The four main methods of CNS synthesis are described, followed by expounding their applications in energy storage, adsorption, biological medicine, and catalysis. Finally, insights on the development and design of CNS are presented.
Article
Chemistry, Physical
Shuaiqi Wang, Yaru Li, Youdi Hu, Xiaoze Zhou, Meng Zhang, Xiaoyu Jia, Yi Yang, Bo-Lin Lin, Gang Chen
Summary: This study presents a facile one-step solvothermal method to synthesize 1T MoS2 hierarchical nanospheres as efficient and stable electrocatalysts for hydrogen evolution reaction without the need for templates or additives. The choice of reaction solvent was found to play a crucial role in regulating the morphology and phase of the resulting MoS2. The obtained 1T MoS2 hierarchical nanospheres exhibit excellent electrocatalytic performance and electrochemical stability.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Polymer Science
Chenchen Liu, Shuning Liu, Lingling Wang, Zhongxiang Bai, Guo Lin, Xiaofang Feng, Kun Jia, Xiaobo Liu
Summary: This work presents the facile synthesis of PAE@Fe3O4 hybrid nanospheres using a reactive polymer as the structure-directing agent. The obtained hybrid nanospheres exhibit diverse electromagnetic loss pathways due to the metalligand bonding between Fe3O4 and the polymer. The optimized PAE@Fe3O4 hybrid nanospheres display enhanced reflection loss and effective absorption bandwidth, making them promising candidates for flexible electromagnetic radiation controlling devices.
Article
Materials Science, Ceramics
Xinxin Zhang, You Lv, Yupeng Zhang, Zehua Dong
Summary: In this work, plasma electrolytic oxidation (PEO) was creatively introduced to fabricate multi-layered nanospheres, with the inner layer containing Zn, Ca and P, middle layer containing Cu and P, and outer layer enriched in Cu, O and Ti. This novel method provides a new approach for preparing hierarchical structures in various fields.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Yulong Jia, Guoliang Yin, Yinhe Lin, Ying Ma
Summary: In this work, MoS2/CoS2 yolk-shell nanospheres were synthesized through a one-pot hydrothermal reaction. The morphology and composition of the yolk-shell nanospheres were characterized and confirmed. The growth mechanism of the yolk-shell nanostructure was proposed based on comparative experiments and characterization of intermediate samples. This research presents a feasible and new strategy for preparing MoS2/CoS2 hybrid materials with a yolk-shell architecture.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Zicheng Cai, Eunjung Goo, Sunghoon Park
Summary: Ethanol sensors with superior performance were fabricated using Au nanoparticles decorated SnO2 hollow nanospheres (Au-SnO2 HNS). The ethanol-sensing response of SnO2 HNS improved 2.7 times when exposed to 100 ppm ethanol gas measured at 250 degrees C, showing selective sensing response towards ethanol gas compared to other VOC gases. The improved sensing properties were attributed to the optimized morphologies of the sensing materials and the catalytic effect of the Au nanoparticles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Biomaterials
Alper Onder, Hava Ozay
Summary: This study synthesized cyclomatrix-type polymeric materials with different surface features and dimensions using hexachlorocyclotriphosphazene (HCCP) and tannic acid (TA) at different stoichiometric ratios. The synthesized polymeric particles were characterized using Fourier-Transform Infrared Spectroscopic (FTIR), Scanning Electron Microscope (SEM), Energy-dispersive X-ray spectroscopy (EDX), X-ray Photoelectron Spectroscopy (XPS), and Thermogravimetric (TG) analysis techniques. The research focused on the in vitro biodegradability, antioxidant features, and drug release system potential of Phz-TA nanospheres.
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2021)
Article
Energy & Fuels
Ranjith Balu, Arivuoli Dakshanamoorthy
Summary: Graphene oxide and CuS were prepared into nanocomposites by a hydrothermal method, showing high specific capacitance and excellent cyclic stability, making them potential candidates for high-performance supercapacitor devices. The structural analysis and electrochemical performance evaluation confirmed the advantages of the CuS/graphene nanocomposite materials in energy conversion and storage applications.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Dawei Wang, Qiuping Zhou, Hongliang Fu, Yue Lian, Huaihao Zhang
Summary: The conversion of renewable biomass resources into advanced electrode materials through green, simple, and economical methods has become an important research direction in energy storage. In this study, Fe-decorated N/S-codoped porous carbon nanospheres have been successfully fabricated from cuttlefish ink through Fe-2(SO4)(3)-assisted hydrothermal carbonization coupled with heat treatment.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Haoyan Cheng, Shan Zhou, Minghao Xie, Kyle D. Gilroy, Zhihong Zhu, Younan Xia
Summary: This article presents a facile method for the colloidal synthesis of amorphous selenium (alpha-Se) nanospheres, allowing tight control over their diameters using various parameters. The average size of the nanospheres is measured using transmission electron microscopy and dynamic light scattering, while their optical properties are characterized with UV-vis spectroscopy. By computing UV-vis spectra with the discrete dipole approximation (DDA) method, a fitting curve is obtained for precise size control of the nanospheres.
Article
Optics
Liuyang Xu, Xin Zhou, Gaoliang Wang, Linlin Zhao, Honglei Yuan, Xianke Sun
Summary: The Ce3+ and/or Eu2+ doped Sr3Y2Ge3O12 phosphors exhibit broad excitation bands and efficient visible emission, allowing tunable luminescence through an energy transfer process.
JOURNAL OF LUMINESCENCE
(2021)
Article
Chemistry, Physical
Ailian Chen, Shirui Wang, Wenjie Cai, Zhaoyu Mu, Yang Chen
Summary: This study synthesized dendritic mesoporous silica nanospheres with tunable structures and investigated their properties for chemical mechanical polishing (CMP) applications. The resulting D-mSiO(2) nanospheres showed superior performance in CMP, making them potential novel abrasives for advanced polishing applications.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Wenli Yu, Zhi Chen, Xianliang Jiang, Weiping Xiao, Bin Dong, Zexing Wu
Summary: This study explores a transition metal doping method to synthesize molybdenum-nickel bimetallic sulfide nanospheres for hydrogen evolution reaction in alkaline electrolyte. The synthesized catalyst exhibits outstanding electrocatalytic performance due to its unique spherical structure and synergistic effects between different elements, providing abundant active sites and electronic interactions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Toxicology
Min-Sung Kang, Gwang-Hee Lee, Ik Hwan Kwon, Mi-Jin Yang, Min Beom Heo, Jae-Won Choi, Tae Geol Lee, Cheol-Ho Yoon, Bosung Baek, Myeong-Chang Sung, Dong-Wan Kim, Eun-Jung Park
Summary: Hexagonal and rod-shaped cerium dioxide nanoparticles (CeONPs) were compared for their toxic effects in mice. It was found that rod-shaped CeONPs induced a more severe pulmonary inflammatory response. The surface charge and protein corona should be carefully considered in interpreting the results.
TOXICOLOGY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Hyun Jung Shin, Sung-Woo Park, Sangbaek Park, Dong-Wan Kim
Summary: Vertically aligned reduced graphene oxide (rGO) with sulfur and poly(ethylene oxide)-based polymer electrolyte double-shell layers (VRG@S@PPE) enable high-loading sulfur cathode in lithium-sulfur batteries (LSBs). The combination of rGO with vapor-grown carbon fiber (VGCF) allows for gas evacuation without structural collapse, resulting in perfect double-shell layer contact. With the reinforcement of VGCF, sulfur-infiltrated rGO (VRG@S) exhibits high capacity and the addition of an additional polymer electrolyte further improves cycle retention, enabling safe and stable quasi-solid-state LSBs with high sulfur loading.
Article
Energy & Fuels
Dongjoo Park, Sangbaek Park, Dong-Wan Kim
Summary: We developed a biodegradable separator made from natural cellulose with a fibrous and porous structure rich in polar functional groups. These functional groups enhance electrolyte wettability, polysulfide adsorption, and lithium affinity, thus improving the performance of Li-S batteries.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Suk-Ho Hwang, Seung-Deok Seo, Dong-Wan Kim
Summary: A facile and time-saving microwave-assisted wet synthesis approach is proposed for Li6PS5Cl (LPSC) superionic conductors, which shows advantages like fast-PS43- generation, high solubility of LiCl, and low adverse effects from solvent molecules. The LPSC crystal obtained from this approach exhibits high Li-ion conductivity and low electric conductivity. It also shows stability when reacting with Li metal and superior cyclability with NCM622. This synthetic approach provides crucial insights for developing sulfide-based solid-electrolytes and all-solid-state batteries at a commercial-scale perspective.
Article
Chemistry, Physical
Myeong-Chang Sung, Gwang-Hee Lee, Dong-Wan Kim
Summary: The perovskite-type material La0.8Sr0.2CrOx is studied as an OER catalyst, and its oxidation states and conductivities are controlled through crystallization modulation method to enhance its catalytic activity. It is found that the La0.8Sr0.2CrO3 nanowires actively oxidize Li2O2 and increase the OER activity, mainly due to their favorable interaction with Li-deficient solid solution (Li2-xO2) during the charging process. This study provides fundamental insights and understanding for designing high-energy efficient rechargeable Li-O2 battery electrodes.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Physical
Sae In Suh, Heesoo Woo, So-Yeon Song, Dongjoo Park, Yong-Yoon Ahn, Eunju Kim, Hongshin Lee, Dong-Wan Kim, Changha Lee, Yong Sik Ok, Jaesang Lee
Summary: In this study, the correlation between the catalytic activity of UK Biochar Research Center biochars (BCs) and their physicochemical properties was explored, and the potential role of endogenous iron in promoting their persulfate activation capability by heat treatment was suggested. It was observed that there was a steady improvement in the persulfate activation efficiency with increasing annealing temperature exclusively for iron-containing BCs (e.g., sewage sludge (SS) BCs). The heat-initiated modification enhanced the electron transfer-mediating capacity and surface affinity toward persulfate, leading to the beneficial effect of annealing on the carbocatalytic activity of iron-containing BCs for non-radical persulfate activation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Environmental
Seongbin Lee, Sooyeon Kim, Sang Soo Han, Dong-Wan Kim, Jiwon Lee, Youngtak Oh
Summary: In this study, Fe3O4-doped reduced graphene oxide (Fe-rGO) materials were prepared via a liquid-phase reduction technique under different coagulation conditions. The Fe-rGO adsorbents showed an effective and selective adsorption of amphiphilic VOCs, which was attributed to the synergistic effect of Fe3O4 nanoparticles and O active sites. The strategy of fabricating a metal oxide-carbon heterostructure provides a selective adsorption platform for amphiphilic VOCs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Se In Kim, Woong-Ju Kim, Jin Gu Kang, Dong-Wan Kim
Summary: Unlike conventional Si anodes, oxidized Si nanosheets, i.e., siloxene, show minimal volume expansion during cycling due to their unique geometries and chemical structures. However, the interactions of siloxene with binders and their effects on charge storage have not been extensively studied. In this study, the intermolecular interactions of siloxene with four typical binders were investigated, and alginate was found to form the strongest intermolecular bonds with siloxene, leading to enhanced cycling stability and rate performance. The alginate-based siloxene electrode exhibited an unprecedented charge capacity retention of 66% after 500 cycles at 200 mA g-1. This study provides valuable insights for designing binders for electrode materials with similar chemical structures to siloxene.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Jeongyoub Lee, Changhoon Choi, Jung Been Park, Seungho Yu, Jinho Ha, Hyungsoo Lee, Gyumin Jang, Young Sun Park, Juwon Yun, Hayoung Im, Subin Moon, Soobin Lee, Jung-Il Choi, Dong-Wan Kim, Jooho Moon
Summary: Heterostructure engineering with rational design of structure and interface contacts can effectively capture soluble lithium polysulfide intermediates and promote their conversion reactions. TiO2@MoS2 heterostructures on carbon cloth show high rate capability, good cycling stability, and satisfactory areal capacity in Li-S batteries under increased sulfur loading. The effect of the built-in electric field's direction on electrocatalytic reactions of polysulfide intermediates is thoroughly investigated, and the rationally arranged TiO2@MoS2 interlayer demonstrates superior electrocatalytic activities, highlighting the importance of optimizing the built-in electric field for high-performance Li-S batteries.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Physical
Sun Hee Choi, Woong-Ju Kim, Byeong-hyeon Lee, Sung-Chul Kim, Jin Gu Kang, Dong-Wan Kim
Summary: This article presents a new solvent-assisted synthesis method that successfully incorporates Sn into Li sulfide conductors. The resulting materials have high crystallinity and excellent ionic conductivity, air stability, and Li metal compatibility, making them suitable for all-solid-state batteries.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Jung Been Park, Changhoon Choi, Sang Won Jung, Byeong Chan Min, Jong Hyun Park, Dong-Wan Kim
Summary: This study develops a stable Zn metal anode in aqueous rechargeable Zn metal batteries (ARZMBs) by designing a Sn-based interfacial layer (ZnTCF@Sn) on Zn with textured crystal facets. ZnTCF@Sn provides abundant zincophilic sites and high surface energy, resulting in fast electrochemical kinetics and dendrite-free deposition. Furthermore, the uniform Sn coverage on the ZnTCF@Sn surface inhibits side reactions and enhances reversibility during Zn deposition/dissolution.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Jong Hyun Park, Changhoon Choi, Jung Been Park, Seungho Yu, Dong-Wan Kim
Summary: Aqueous zinc-ion batteries (AZIBs) have gained attention for grid-scale energy storage. However, challenges such as dendrite accumulation, gas generation, and corrosion hinder their commercialization. This study proposes a novel artificial protective layer to address these issues, improving the stability and durability of the zinc anode.
ADVANCED ENERGY MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Kyounghoon Jung, Dwi Sakti Aldianto Pratama, Andi Haryanto, Jin Il Jang, Hyung Min Kim, Jae-Chan Kim, Chan Woo Lee, Dong-Wan Kim
Summary: The incorporation of iridium in ruthenium phosphides reduces the binding energy of hydrogen intermediates, enhancing catalytic activity and making it a promising low-cost catalyst for hydrogen evolution.
ADVANCED FIBER MATERIALS
(2023)
Article
Chemistry, Physical
Kunik Jang, Hyunseok Yoon, Ji Seong Hyoung, Dwi Sakti Aldianto Pratama, Chan Woo Lee, Dong-Wan Kim
Summary: In this study, a highly efficient electrocatalyst for hydrogen evolution reaction (HER) in alkaline media at high current densities was designed by Ru heteroatom doping and an open nanoframe structure. The designed catalyst exhibited excellent performance with low overpotential and long-term stability, attributed to the hydrophilic and aerophobic properties of the catalyst surface.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Review
Electrochemistry
Hyunseok Yoon, Bobae Ju, Dong-Wan Kim
Summary: Polymer electrolyte membrane water electrolysis (PEMWE) is a promising hydrogen energy production technology, but it still faces challenges in the acidic oxygen evolution reaction (OER). Existing noble metal electrocatalytic materials are insufficient for commercialization, necessitating the development of low-cost, highly active, and stable catalysts.
Article
Chemistry, Multidisciplinary
Abu Talha Aqueel Ahmed, Sankar Sekar, Shubhangi S. Khadtare, Nurul Taufiqu Rochman, Bathula Chinna, Abu Saad Ansari
Summary: In this study, MnCo2S4 nanosheet catalyst was successfully synthesized and found to exhibit superior performance in hydrogen evolution. Compared to MnCo2S4, MnCo2S4 showed low overpotentials, moderate Tafel slope, and excellent sustainability. The outstanding performance can be attributed to the increased number of electrochemically active sites and enhanced electronic conductivity on the catalyst surface.
Article
Chemistry, Multidisciplinary
Victor V. Maltsev, Elena A. Volkova, Elizaveta V. Koporulina, Diana D. Mitina, Vladimir L. Kosorukov, Anna I. Jiliaeva, Daniil A. Naprasnikov, Konstantin N. Gorbachenya, Viktor E. Kisel
Summary: The phase relationships, crystal properties and luminescence kinetics of two complex systems were studied, including unit cell parameters, segregation coefficients of impurities, and lifetimes of energy levels.
Article
Chemistry, Multidisciplinary
Xiaoman Zhang, Wangwang Xu, W. J. Meng, Andrew C. Meng
Summary: This study successfully grew high-quality single crystal AlScN nanowires through ultra-high vacuum reactive sputtering technique and characterized their structure and properties. The nanowires exhibit significantly reduced mosaic spread and predominantly single ferroelectric domains, as well as a high piezoelectric constant.
Article
Chemistry, Multidisciplinary
Tom E. de Vries, Elias Vlieg, Rene de Gelder
Summary: Networks are important for describing relationships between people, roads between cities, reactions between chemicals, and other interactions. Bipartiteness, dividing the network into two groups, can facilitate the study of the network's structure. We have developed an algorithm that can find a near-optimal bipartisation within a reasonable time frame and used it to uncover the hidden structure of the CSD cocrystal network.
Article
Chemistry, Multidisciplinary
Chuchu Han, Jing Yang, Xin Zhang, Aisen Li, Jiang Peng
Summary: An elastic crystal based on a photo-reactive acylhydrazone derivative is reported, which exhibits reversible bending behavior under UV irradiation and heating. The crystal undergoes reversible E<->Z isomerization under light and heating conditions. The crystal demonstrates excellent elastic properties and the bending can be controlled to control the output direction of red light.
Article
Chemistry, Multidisciplinary
Lingfeng Zhang, Yu Wang, Yefeng Wang, Shuai Liu, Na Zhang, Mingmin Yang, Haixia Ma, Zhaoqi Guo
Summary: This study designs and synthesizes a series of high-energy salts compounds without heavy metal ions and azide groups. The molecular structures and stability of the compounds are confirmed through single-crystal X-ray diffraction and intermolecular interaction analysis. Furthermore, the thermal stability, energetic properties, and electrical initiation properties of the compounds are investigated, suggesting their potential as primary explosives.
